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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 3 Dec 2019 13:39:54 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB3DdqR152756702 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 3 Dec 2019 13:39:52 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9C8ABA4066; Tue, 3 Dec 2019 13:39:52 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B3CA6A4064; Tue, 3 Dec 2019 13:39:50 +0000 (GMT) Received: from JAVRIS.in.ibm.com (unknown [9.85.70.93]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 3 Dec 2019 13:39:50 +0000 (GMT) Subject: Re: [PATCH 1/3] powerpc/pseries: Account for SPURR ticks on idle CPUs To: "Gautham R. Shenoy" , Michael Ellerman , Vaidyanathan Srinivasan , Nathan Lynch , "Naveen N. Rao" , Tyrel Datwyler References: <1574856072-30972-1-git-send-email-ego@linux.vnet.ibm.com> <1574856072-30972-2-git-send-email-ego@linux.vnet.ibm.com> From: Kamalesh Babulal Date: Tue, 3 Dec 2019 19:09:48 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <1574856072-30972-2-git-send-email-ego@linux.vnet.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19120313-0008-0000-0000-0000033C5BAE X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120313-0009-0000-0000-00004A5B7680 Message-Id: <6ec054a4-e87b-6d3f-c23f-bbb6b219c77a@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-03_03:2019-12-02,2019-12-03 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 phishscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 spamscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912030107 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 11/27/19 5:31 PM, Gautham R. Shenoy wrote: > From: "Gautham R. Shenoy" > > On PSeries LPARs, to compute the utilization, tools such as lparstat > need to know the [S]PURR ticks when the CPUs were busy or idle. > > In the pseries cpuidle driver, we keep track of the idle PURR ticks in > the VPA variable "wait_state_cycles". This patch extends the support > to account for the idle SPURR ticks. Thanks for working on it. > > Signed-off-by: Gautham R. Shenoy Reviewed-by: Kamalesh Babulal